ET MALWARE Winnti Payload - XORed Check-in to Infected System (0xd4413890)

Query · suricata

flow:established,to_server;
dsize:<300;
content:"|b0 1c 03 d4 90 38 41 d4 2a b4 80 7f|"; depth:12;
content:"|04 00|"; endswith;
Raw source ET MALWARE Winnti Payload - XORed Check-in to Infected System (0xd4413890) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Winnti Payload - XORed Check-in to Infected System (0xd4413890)";
    flow:established,to_server;
    dsize:<300;
    content:"|b0 1c 03 d4 90 38 41 d4 2a b4 80 7f|"; depth:12;
    content:"|04 00|"; endswith;
    reference:url,medium.com/chronicle-blog/winnti-more-than-just-windows-and-gates-e4f03436031a;
    classtype:trojan-activity;
    sid:2027361; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_17, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag APT, tag Winnti, updated_at 2022_03_24;
)

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